Vanikoro_Flycatcher.JPG

BIOL 530

We will use the latitudinal increase in diversity towards the equator as a launching point to explore how diversity forms, is maintained, and disappears, and why we find such dramatic variation in diversity around the world.

Course discussions will focus on both evolutionary and ecological perspectives of diversity, and we will review various hypotheses to explain latitudinal diversity gradients.

Class schedule     classes by Zoom
Tuesdays 10:00am - 11:30am & Thursdays 8:30 - 10:00am

Week 1    Tuesday, January 11, 2022   Introduction & complex questions in science
                 Thursday, January 13, 2022    Strong inference
   

Week 2    Tuesday, January 18, 2022    Multiple working hypotheses
                  Thursday, January 20, 2022    Biological patterns across latitude
   

Week 3    Tuesday, January 25, 2022    A framework for studying diversity gradients
                  Thursday, January 27, 2022    The latitudinal gradient through deep time

 

Week 4    Tuesday, February 1, 2022   Latitudinal Variation in Cladogenesis & Extinction

                 Student presentations begin 

                 Thursday, February 3, 2022    Janzen's Hypothesis
 

Week 5   Tuesday, February 8, 2022    Asynchrony of Seasons Hypothesis
                 Thursday, February 10, 2022    Shifting Ranges Hypothesis

 

Week 6   Tuesday, February 15, 2022    Biotic vs Abiotic Selection Hypothesis
                 Thursday, February 17, 2022    Geographic Area Hypothesis

 

Week 7   Reading week    

 

Week 8   Tuesday, March 1, 2022    Species Energy - Rates of Evolution Hypothesis
                  Thursday, March 3, 2022    Species Energy - Number of Individuals Hypothesis

 

Week 9   Tuesday, March 8, 2022    Glacial Extinctions Hypothesis
                  Thursday, March 10, 2022    Tropical Niche Conservatism Hypothesis

 

Week 10  Tuesday, March 15, 2022    Density-dependent Mortality Hypothesis
                  Thursday, March 17, 2022    Climate Stability - Niche Overlap Hypothesis

 

Week 11  Tuesday, March 22, 2022    Climate Stability - Population Size Hypothesis
                  Thursday, March 24, 2022    Biotic Interactions - Ecological Breadth Hypothesis

 

Week 12  Tuesday, March 29, 2022    Evolutionary Time Hypothesis
                  Thursday, March 31, 2022    Environmental Harshness Hypothesis

 

Week 13  Tuesday, April 5, 2022   Geometric Constraints Hypothesis
                  Thursday, April 7, 2022    Wrap-up discussion. 

Grade breakdown

Presentation of hypothesis & predictions  30%          instructions & rubric

Co-presentation of critical assessment  15%          instructions & rubric

Major written paper  35%          instructions & rubric

In-class participation  20%          instructions & rubric

There are no formal exams in this class.

Class readings    (I will send out readings each week by email)

Week 1    Tuesday, January 11, 2022   no readings
                 Thursday, January 13, 2022    Platt 1964 Science 146:347-353
   

Week 2    Tuesday, January 18, 2022    Chamberlin 1965 Science 148:754-759
                  Thursday, January 20, 2022    Hillebrand 2004 American Naturalist 163:192-211
   

Week 3    Tuesday, January 25, 2022    Jablonski et al. 2006 Science 314: 102-106
                  Thursday, January 27, 2022    Mannion et al. 2014. TREE 29:42-50

 

Week 4    Student presentations begin

                 Tuesday, February 1, 2022    Weir & Schluter 2007 Science 315:1574-1576 &

                                                                        Martin et al. 2007 J. Evol. Biol. 20:930-936
                 Thursday, February 3, 2022    Ghalambor et al. 2006 Integr. & Comp. Biol. 46:5-17

Week 5   Tuesday, February 8, 2022    Martin et al. 2009 Ideas Ecol. Evol. 2:9-17.
                 Thursday, February 10, 2022    Dynesius & Jansson 2000 PNAS 97:9115-9120


Week 6   Tuesday, February 15, 2022    Schemske 2009 book chapter
                 Thursday, February 17, 2022    Rosenzweig 1992 J. Mammalogy 73:715-730

Week 7   Reading week    

 

Week 8   Tuesday, March 1, 2022    Allen et al. 2006 PNAS 103:9130-9135
                  Thursday, March 3, 2022    Wright 1983 Oikos 41:496-506  &

                                                                 Currie & Paquin 1987 Nature 329:326-327

Week 9   Tuesday, March 8, 2022    Adams & Woodward 1989 Nature 339:699–701 &  

                                                            McGlone 1996 Global Ecol. Biogeogr. Letters 5:309-314
                  Thursday, March 10, 2022    Wiens & Donaghue 2004 TREE 19:639-644

Week 10  Tuesday, March 15, 2022    Hille Ris Lambers et al. 2002 Nature 417:732-735
                  Thursday, March 17, 2022    Klopfer & MacArthur 1961 Am. Naturalist 95:223-226

Week 11  Tuesday, March 22, 2022    Connell & Orias 1964 Am. Naturalist 98:399-414
                  Thursday, March 24, 2022    Dyer et al. 2007 Nature 448:696-699

Week 12  Tuesday, March 29, 2022    Fischer 1960 Evolution 14:64-81 (excerpt only)
                  Thursday, March 31, 2022    Brown & Gibson 1983 (excerpt from book) &

                                                              Thiery 1982 Biological Reviews 57:671-710 (excerpt)

Week 13  Tuesday, April 5, 2022    Collwell & Lee 2000 TREE 15:70-76
                  Thursday, April 7, 2022    Jetz & Fine 2012 PLoS Biology 10:e1001292

Hoary_Redpoll_10_edited.jpg